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45# Carbon Steel Positioning Block
This positioning block made of 45# carbon steel is a precision locating component widely used for fixture positioning, CNC machining workholding and automated assembly stations. It is fully machined from solid 45# carbon steel blanks by CNC milling, featuring central locating bore, mounting threaded holes and flat reference surfaces. After black oxide anti-rust treatment, the workpiece delivers stable hardness, excellent positioning repeatability and uniform batch dimensional consistency, perfectly fitting small-batch bulk production of mechanical locating parts
- Machining Process: Precision CNC milling, drilling, tapping, deburring, black oxide surface treatment
- Material: 45# Carbon Steel
- Accuracy: Standard ±0.01 mm, ultra-precision bore tolerance up to ±0.005 mm
- Surface Finish: Black oxide matte anti-rust coating
- Features: Stable hardness, high positioning precision, great batch consistency, small batch production available
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With abundant experience in mold CNC machining, we utilize multi-axis CNC milling equipment to process small-batch carbon steel mechanical parts. Solid blank machining ensures identical hole position, aperture and flatness across the whole batch, and our supporting surface treatment process shortens the full production cycle of small orders. We provide drawing review, CNC precision machining, anti-rust surface treatment and batch sampling inspection services, supporting repeated small-volume orders for fixture manufacturers and automation equipment factories.
Core Advantages & Common Applications
Core Advantages
- High Batch Dimensional Consistency: CNC cutting from whole steel blanks keeps uniform size of locating holes and mounting holes for all pieces in a batch, avoiding assembly deviation during mass fixture setup.
- Anti-Rust Black Oxide Surface: Black oxide treatment forms a protective layer on steel surface, effectively preventing rust during storage and workshop use, extending service life.
- Balanced Hardness & Structural Rigidity: 45# carbon steel material has proper hardness after processing, resisting surface dent and deformation under clamping pressure for long-term repeated positioning.
- Integrated One-Block Machining: Central locating cavity, fixing threaded holes and assembly reference planes are completed in one machining process without secondary assembly steps.
- Flexible Small-Batch Production Flow: Optimized production schedule adapts to recurring small-lot orders, balancing fast delivery and controlled processing costs.
Common Applications
Specification Table
| Parameter | Details |
| Raw Material | 45# Carbon Steel |
| Machining Process | Precision CNC milling, drilling, tapping, deburring, black oxide anti-rust treatment |
| Dimensional Tolerance | Standard ±0.01 mm; ±0.005 mm precision tolerance for central locating bore |
| Surface Finish | Black oxide matte anti-rust coating |
| Central Bore Range | Customized per customer locating demand, common range: 6mm–35mm |
| Single Block Outline Size | Customized based on engineering drawings, standard square specifications available |
| Working Temperature | -10℃ ~ +120℃ |
| Quality Control | Batch sampling CMM dimensional inspection, bore concentricity test, surface anti-rust layer check, fixture assembly matching tes |
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